386778328 has 8 divisors (see below), whose sum is σ = 725209380. Its totient is φ = 193389160.

The previous prime is 386778323. The next prime is 386778331. The reversal of 386778328 is 823877683.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386778323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24173638 + ... + 24173653.

Almost surely, 2^386778328 is an apocalyptic number.

It is an amenable number.

386778328 is a deficient number, since it is larger than the sum of its proper divisors (338431052).

386778328 is a wasteful number, since it uses less digits than its factorization.

386778328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48347297 (or 48347293 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 52.

The square root of 386778328 is about 19666.6806553623. The cubic root of 386778328 is about 728.5969975172.

The spelling of 386778328 in words is "three hundred eighty-six million, seven hundred seventy-eight thousand, three hundred twenty-eight".